Norcold N300.3 User Manual

25 pages

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Norcold N300.3 Refrigerator

This article is taken from the Winnebago Rialta Owners web site with the permission of the site owner. It

has been modified to remove motorhome-oriented terminology, and insert TrailManor-oriented

terminology. The scattered parts have been re-united and organized. And the Table of Contents has been

added.

DISCLAIMER AND WARNING This article deals with disassembly, repair, and reassembly of a

propane burning appliance. Propane is dangerous, and nothing in this article mitigates that danger.

It is recommended that unless you are well-trained in propane burning appliances, you engage a

certified repair technician to perform the work described herein.

The original article is located at http://www.rialtainfo.com/winnebago/refrigerator.htm

Table of Contents

Section Title

Page

Part 1 - General Information

Operators’ Manuals

Refrigerator FAQs

Levelling the Refrigerator

The Stated Requirement

The Real World

Levelling Measured at the Wheels

Conclusions

Levelling Measured at the Countertop

Summary

Maintenance and Cleaning

Part 2 - Troubleshooting and Repair

Troubleshooting Electrical Operation

Troubleshooting Propane Operation

Introduction to Troubleshooting the Burner

Troubleshooting Steps - Propane Burner

Results of Troubleshooting

Cleaning

Cleaning the Tip of the Thermocouple

Cleaning the Igniter

Cleaning the Burner Orifice Assembly

Part 3 - Replacing the Thermocouple

Background

Purchase of the Replacement Thermocouple

Removing the Refrigerator from the Trailer

Old Thermocouple Removal

New Thermocouple Installation

Cleaning And Repainting The Rest Of The Mechanism

Another Cleaning Idea

Putting the Refrigerator Back in the Trailer

Other manuals for Norcold N300.3

Service Manual16 pages

Parts List10 pages

Questions and Answers:

L
lfowlerJul 29, 2025
How to replace the thermostat on a Norcold N300.3?
- J
  Jerry LopezJul 29, 2025
  To replace the thermostat on your Norcold Refrigerator: 1. Close the valve of the propane gas tank(s). 2. Pull the knob off the thermostat. 3. Remove the gas supply line from the inlet flare fitting of the thermostat. 4. Remove the safety valve from the thermostat. 5. Remove the two screws that attach the thermostat to the bracket. 6. Remove the two red wires from the thermostat. 7. Remove the clips that attach the capillary tube to the cooling fin inside the refrigerator. 8. Gently pull the capillary tube through the back of the refrigerator cabinet. 9. To install the replacement thermostat, do steps 1-8 in reverse. 10. Make sure the capillary tube is flat against the cooling fin. 11. Examine all the gas connections for leaks.